648 SEC. 13. CHEMISTRY. 



2701. Chloride of Manganese from native " manganese " 

 stills after neutralization with carbonate of lime. 



N. Mathieson $ Co. 



2702. Limestone Dust. Crushed carbonate of lime. 



N. Mathieson $ Co. 



2703. Manganese Mud, as precipitated before blowing with 

 air. N. Mathieson fy Co. 



2704. Manganese Mud, after oxidation by blowing. 



N. Mathieson fy Co. 



2705. Burnt Lime, from Buxton, Derbyshire. This lime is 

 unslaked. N. Mathieson fy Co* 



2706. Hydrate of Lime, sifted and ready for the bleaching 

 powder chambers. N. Mathieson 3? Co. 



2707. Bleaching Powder, containing 38 per cent, of chlorine, 



AT. Mathieson $ Co. 



2724. No. 1. Cupreous Iron Pyrites, employed in the 

 manufacture of sulphuric acid. Wldnes Metal Company. 



Water - - - - -70 



Sulphur - - 49-00 



Arsenic - -47 



Iron - 43 '55 



Copper - - 3-20 



Zinc - - -35 



Lead - 93 



Lime - - - - -10 



Siliceous residue - 63 

 Oxygen, and traces of various metals - 1-07 



100-00 



2725. No. 2. Burnt Ore, or cinder remaining after the 

 almost complete elimination of the sulphur from the pyrites as- 

 sulphurous anhydride. Widnes Metal Company*. 



Water 



Sulphur 



Arsenic 



Iron 



Copper 



Zinc 



Cobalt 



Silver 



Lead 



Lime 



Oxygen and loss 



Insoluble residue 



100-00 



- 58-25 83 per cent. Fe 2 O 3 . 



